External-combustion turbine



' Aug..21, 4 1929.

c. M. HARRIS;

EXTERNAL couUsTIoN yTummui Fried oci, 29L 1926 I v 22 v,

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f /6 Ale? PatentedAug. I. y

UNITED fCHABQLESM. HARRIS, OF COLORADO SPRINGS, COLORADO.

l. EXTEBNAII- COMBUSTION TURBINE.

Application ill-ed October 29, 1926. Serial' No. 145,058. l

Figure 1 elevation of the represents a side turbine, partly in section; Fig. 2, a sectionall elevation of the turbine on the line A-A in Fig. l; Fig, a. fragmentary end eleva`V tion of the turbine; and Fig. 4', an' fragmentary sectional view.

Although l ferred embodiment of. my invention, not thereby limit myself toA shown, but wish itfunderstood that within the scope lof what hereinaften-is'clmmed, various changes in the details ofconstruction enlarged Ido may be made without departing from thefy .by the pro]ect1on 23 at each conduit 22 facilispirit of the invention.

rihe machine comprises' two main elements, the housing and the rotorwhich contains the comprises twoA end charger. The liousi portions 1 and 2 provided-with bearings 1aL and 2a, and drumportion I3 provided with a pair of converging faces 4 and"5 vcarrying a plurality of stator blades 7 and 8 `dispose in annular rows so that thein'ner two rows contain the shortest blades and each succeeding row outward contains'blades longer than the adjacentprecedin rowg an amiular combustion chamber 6 converged edges of said faces 4.- and 5,`and a spark'plug chamber 9, containing the spark plug 24, communicatingwith annularcombustion chamber'.

rllhe rotor comprises a pairl ofl conical drums 10 and 11 .rigidly mounted on a shaftf 12 journalled in .beariis l? and 2; helical blades 16 andA 16jzrigi yfmounted on drum 11 so aste form; helicaliehannels 17 and 18 which taper-toward the 'base Iof drum 10 and communicate-with'annular? combus# tion chamber 6 via conduits 22; a similar pair of helical blades 13 and 13. mounted on drum 10 so as to form' tapering helical channels 1d and-15 communicating with annular combustion chamber 6; a cylindrical rotor shell 19 mounted on said helical blades land provided with turbine vblades-20 .and 21 on the periphery, rotor vblades 20 being disposed adjacentto stator blades 7 and rotor blades 21, adjacent testator blades 8; and a projection 23 "adjacent to each conduit 22.

to external combusobject is to'providev show and describe the pre- Athe precise form sposedbetween the.

The fuel mixture is drawn simultaneously, from intake chambers 27 and 28 into helical channels 14,15, 17 and 18 and passing 'expandinggases ofcombustion act outward upon the two sets of turbine blades, actuating the rotor and passing into exhaust cham- A bers 29 and 30 and escaping through exhaust ports 31 and 32. As the mixture is i1itr0 duced4 through the tapering helical channels,

gradually diminishing cross sectional area of 'theA helical channels, so that when it reaches-theconduits 22 it has received its maximum compression. A vortex is caused tating. the flow of the mixture vinto the annular combustion chamber 6.

I claim': 1 In a turbine of the class described, the combination of 'a stator having an annular combustion chamber and stator blades; a

. .'30 it becomes compressed by reason of the shaft'journalled in the'end portions of said p i stator, a rotor comprising la pair of conical members ldisp'osed with their bases adjacent and rigidly mounted on said shaft; a plurality lof helical blades on each conical meinber, the leads yof the helices becoming pro gressively shorter and the blades progressively narrower towards the base of said conical member, forming a plurality of channels lwhich become pro ressively smaller in width-and depth; a cylindrical shellenclosing the outerl ends of said helical blades, rotor blades mounted on the periphery of said' j sh'elland adjacent the stator blades;and a' :plurality yof conduits in said cylindrical `shelheach communicating with one of said channels land with said annular combustion chamber.

2. I n a turbine of the class described, the combination of a stator'containing annular 'rows of stator blades and an annular combustion chamber; a shaft. journalled in the 'end portions of said stator; a rotor comprisin a air of conical members disposed with t elr 'ases adjacent andrigidly mountioo ed on said shaft, helical blades von each conical member forming helical channels which taper toward the base of said conical psc a projection on said rotor vshell adjacent to' each conduit; and an intake chamber and l an exhaust chamber in said stator.

3. In combination, a stator having an 'annular combustion chamber; a shaft journalled in said stator; a pair of conical members disposed with their bases adjacent and mounted on said shaft; helical blades on each conical member forming helical channels Which taper in Width and depth toward the base of each conical member; a cylindrical shell enclosing the outer ends of said helical blades, a plurality of rotor blades mounted iii-annular rows on theouter portion of said shell'and a conduit communieating with eaclr'lielical channeland with said annular combustionv chamber. l

4. In a turbinejof 'the class described, the combination of a stator havin an annular combustion chamber; a shaft journalled in the end .portions of said stator; a rotor comprising a pair of conical members Vmounted on said shaft,'helical blades on each conical member forming helical channels, a cylindrical shell enclosing the outer ends vof said hewlical blades,'rotor blades mounted on the outer portion of said shell, and a conduit communicating with each helical channel and with said annular combustion chamber;

and an intake chamber and an exhaust cham-V ber in said stator.

CHARLES M. HARRIS. 

